Heredity/Genes Test

White hair (W) is dominant in horses, and non-white (w) is recessive. A dominant WW horse is crossed with a recessive ww horse, as shown in the Punnett square. What percentage of offspring would have white hair?

• 0%

• 50%

• 75%

• 100%

Round seeds (R) are dominant to wrinkled seeds (r) in pea plants. If two heterozygous parents are crossed as shown above, what percentage of offspring would have round seeds?

• 0%
• 50%
• 75%
• 100%

A partial Punnett square is shown below. Which of the following statements describes the parental genotypes that would result in this Punnett square?

• Both parents are heterozygous.
• One parents is homozygous dominant, the other is heterozygous.
• One parents is homozygous recessive, the other is heterozygous.
• Both parents are homozygous dominant.

The different forms of a gene

• heredity
• genetics
• gene
• alleles

This trait always shows up in an organism when the allele is present

• dominant allele
• codominance
• probability
• recessive allele

This trait is hidden whenever the dominant allele is present

• dominant allele
• codominance
• recessive allele
• Punnett Square

An organism's genetic makeup, or allele combination

• fertilization
• genotype
• phenotype
• heterozygous

An organism that has two different alleles for a trait (hybrid)

• fertilization
• genotype
• homozygous
• heterozygous

An organism that has two identical alleles for a trait (purebred)

• genotype
• phenotype
• homozygous
• heterozygous

Which of the following is an example of incomplete dominance?

• A red cow and a white bull have a red and white spotted calf.

• Human ABO blood types

• A red flowering plant and a white flowering plant have pink flowered offspring.

• A tall plant and a short plant have tall offspring.